2021 - 2024 Chevrolet Trailblazer Fog Light - Left (Driver) (OEM)

What to Look for When Buying This Part

• Check the lens for cracks or damage.
• Make sure the housing is intact and not broken.
• Inspect the connectors for corrosion.
• Verify that the part is for the left (driver) side of your vehicle.

Quality Indicators for the Available Options

What's Typically Included with the Part

• The fog light assembly
• Sometimes includes a bulb (check the product description)
• Mounting hardware may or may not be included

Difficulty Level and Estimated Time

• Difficulty: Easy to Moderate
• Estimated Time: 30 minutes to 1 hour

Special Tools Needed (if any)

• Screwdrivers (Phillips and/or flathead)
• Socket set
• Pliers
• Possibly a trim removal tool

Critical Steps and Tips

1. Disconnect the battery: This is a safety precaution to prevent electrical shock.
2. Remove the old fog light: Unscrew the mounting screws and disconnect the electrical connector.
3. Install the new fog light: Connect the electrical connector and screw in the mounting screws.
4. Test the fog light: Turn on the fog lights to make sure they are working properly.

Whether DIY is Recommended or Professional Installation is Better

• DIY is recommended for those with basic mechanical skills.
• Professional installation is recommended if you are not comfortable working on your car's electrical system or if you have difficulty accessing the fog light.

Compare: Used OEM, Refurbished OEM, New Aftermarket

Choosing the right fog light replacement depends on your budget and preferences. Here's a breakdown of your options:

Used OEM

• Best Value: Used OEM fog lights are genuine factory parts that have been tested and inspected.
• Genuine Factory Parts: You're getting the same quality and fit as the original part.
• Tested and Inspected: Ensures the part is in good working condition.
• Significantly Lower Prices: A budget-friendly option compared to new parts.

Refurbished OEM

• Factory Parts Professionally Restored: Original factory parts that have been professionally restored.
• New Components: Worn or damaged components are replaced with new ones.
• Like-New Condition: Refurbishing brings the part closer to its original condition.

New Aftermarket

• Brand New Third-Party Parts: Manufactured by companies other than the original manufacturer.
• Built to OE Specs: Designed to meet the original equipment specifications.
• Wide Range of Brands and Prices: Offers a variety of options to choose from.

Parts Commonly Replaced or Checked at the Same Time

• Fog light bulbs
• Fog light wiring harness
• Fog light switch
• Fog light relay

Why Replacing Related Parts Prevents Repeat Failures

Replacing related parts can prevent repeat failures by addressing underlying issues that may have caused the original fog light to fail. For example, a faulty wiring harness can cause bulbs to burn out prematurely.

How Long This Part Normally Lasts

• A fog light can last for many years (5-10+) under normal conditions.

Factors that Affect Longevity

• Driving conditions (exposure to road debris, salt, and moisture)
• Quality of the bulb
• Frequency of use
• Electrical system health

Budget vs Mid-Range vs Premium Options

• Used OEM: $30 - $75
• Refurbished OEM: $50 - $100
• New Aftermarket: $40 - $120

Labor Cost Considerations if Applicable

• Labor costs for fog light replacement can range from $50 to $150, depending on the shop and the complexity of the installation.

Total Job Cost Estimates

• DIY: $30 - $120 (parts only)
• Professional Installation: $80 - $270 (parts and labor)

Known Issues for This Vehicle's System Related to This Part

• Some models may experience issues with moisture entering the fog light housing, leading to corrosion and bulb failure.
• Check for any recalls or Technical Service Bulletins (TSBs) related to the fog light system on your specific vehicle.

Any TSBs or Common Complaints

• It is recommended to check the NHTSA website for any TSBs related to fog light issues on the affected Buick, Chevrolet, and GMC models.

How to Confirm Proper Operation

• Turn on the fog lights and visually inspect them to ensure they are working.
• Check that the fog lights are aimed correctly.

What to Look/Listen for to Verify It's Working Correctly

• The fog lights should illuminate brightly and evenly.
• There should be no flickering or unusual noises.
• The fog light indicator light on the dashboard should illuminate when the fog lights are turned on.

FAQ

Q: How do I know if my fog light bulb is bad?

A: If your fog light isn't turning on, or if it's dim or flickering, the bulb is likely burned out. You can also visually inspect the bulb for a broken filament.

Q: Can I replace just the fog light bulb, or do I need to replace the whole assembly?

A: You can usually replace just the bulb if the housing is in good condition. However, if the housing is cracked or damaged, you'll need to replace the entire assembly.

Q: Are fog lights necessary?

A: Fog lights are designed to improve visibility in foggy or low-visibility conditions. While not strictly necessary, they can enhance safety.

Q: What is the difference between fog lights and driving lights?

A: Fog lights are designed to be mounted low and project a wide, flat beam of light to illuminate the road surface in foggy conditions. Driving lights are designed to project a longer, more focused beam of light to improve visibility at higher speeds.

Q: How do I aim my fog lights?

A: Fog lights should be aimed so that the top of the beam is no higher than the fog light itself when projected onto a wall 25 feet away. Refer to your vehicle's owner's manual for specific aiming instructions.

OEM Part Numbers:

• Chevrolet: 42713518, 42737706

Fits Years: 2021 2022 2023 2024